PLANAR PHOTONIC CRYSTAL DEVICE WITH CONTROLLED DISPERSION

摘要

The invention relates to the general field of optical devices comprising at least one planar photonic crystal including a substantially regular and hexagonal network of nanometric structures, each elementary structure being referenced in a reference system (x, y). The network comprises a line, known as the "central fault line", that does not comprise nanometric structures, said line being disposed along axis x. Each structure SIJ is centred on a point CIJ having coordinates (xCIJ, yCIJ). For each nanometric structure belonging to the half-plane such that y is positive there is a corresponding nanometric structure belonging to the half-plane such that y is negative. The network of the device includes at least one nanometric structure having a centre CIJ with coordinates (xCIJ, yCIJ) corresponding to a nanometric structure having a centre with coordinates (x'CIJ, y'CIJ) such that x'CIJ is different from xCIJ or such that y'CIJ is different from -yCIJ, thus breaking the symmetry of the network in relation to axis x.